20:10:28:51Interexchange cable and wire facilities -- Category 3 -- Included services and facilities.

Interexchange cable and wire facilities, category 3, include the cable and wire facilities used for message toll and toll private line services. It includes cable and wire facilities carrying intertoll circuits, tributary circuits, the interexchange channel portion of special service circuits, circuits between control terminals and radio stations used for overseas or coastal harbor service, interlocal trunks between offices in different exchanges carrying only message toll traffic, and certain tandem trunks which carry principally message toll traffic.

Source: 19 SDR 111, effective January 31, 1993.